Bearings, units and housings -- Roller bearings -- Tapered roller bearings -- Four-row tapered roller bearings -- Four-row tapered roller bearings, TQO design SKF BT4B 328952 A/HA1

BT4B 328952 A/HA1

Design

Design variant/feature

TQOT

Dimensions

d		317.5	mm
D		438.15	mm
B		276.225	mm
T		276.225	mm
d₁	≈	342	mm
D₁	≈	392	mm
r_1,2	min.	1.5	mm
r_3,4	min.	3.3	mm

Tapered bore, taper 1:12

Calculation data

Basic dynamic load rating	C	3520	kN
Basic static load rating	C₀	8300	kN
Fatigue load limit	P_u	695	kN
Comparative radial load rating	C_F	930	kN
Comparative axial load rating	C_Fa	198	kN
Thrust factor	K	1.34
Calculation factor	e	0.43
Calculation factor	Y₁	1.6
Calculation factor	Y₂	2.3
Calculation factor	Y₀	1.6

Mass

Mass bearing

135

Model Number: BT4B 328952 A/HA1
Inner Diameter：317.5mm Outer Diameter：438.15mm Width：-mm
Reference speed:- Limiting speed:-
Type：Bearings, units and housings Roller bearings Tapered roller bearings Four-row tapered roller bearings
Details： Four-row tapered roller bearings Four-row tapered roller bearings, TQO design
Update date：2025-12-09
Application:machine lathe,food packaging,Industrial,welding equipment,Automation,hydraulic cylinder buffer,marine analysis and testing equipment,trolley,Industrial,sheet industry,steam Hydraulic control element
Similar models:BT4B 328952 A/HA1
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Model No.	Inner Diameter	Outer Diameter	Width	Type
1325 VRME R	1259	-	-	Seals
29334 E	170	280	67	Bearings, units and housings
29492 EM	460	800	206	Bearings, units and housings
6319-2Z	95	200	45	Bearings, units and housings
C 3030 V	150	225	56	Bearings, units and housings
FSAF 22613 x 2.1/4 T	57.15	-	-	Bearings, units and housings
FY 60 TF	60	-	-	Bearings, units and housings
KD10-705	115	521	-	Coupling systems
NK 8/16 TN	8	15	16	Bearings, units and housings
NKX 35	35	47	30	Bearings, units and housings
NU 2217 ECJ	85	150	36	Bearings, units and housings
NUH 2340 ECMH/PEX	200	420	138	Bearings, units and housings

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